I don't come up with tips very often, I'm more of a worker than a thinker. So, here goes.
Discovery was made... I like a lot of people and joined a lot of communities. That's great, except my Notifications were overflowing. I learned, in order to reduce the number of notifications I chose not to follow as many people, but a select few. This is what I did.
I kept their communities (even though I dropped a few for inactivity), as I do enjoy getting their information/post. Now I am following their communities, not them personally. So, now I don't see a post that they posted in 2 or 3 communities, I only see the one.
I go to the drop down menu and make sure I go into their communities, almost daily and see their post along with their community. That is the key! I have met more great people doing just by engaging, and now I build a relationship with another great person that I may not have gotten to know.
How are you handling all your notifications?